Furnace.



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3o sectional view taken through UNITED STATES .PATENT oEEioE.

JAMES M.A HEVEELY, or ALTooNA, lPENNSYLVA511A, ASSIeNoE or ONE-HALE ToHENRY A. HEVEELY, or ALTooNA, PENNSYLVANIA.

FURNAGE.

` Specication of Letters Patent.

Application filed January 23, 1906. Serial No. 297,498.

Patented June 25,1907.

.To all whom it may concern/.1

Be it known that l, JAMES M. HEVERLY, a

'citizen of the United States, residing at Altoona, in the county ofBlair and State of Pennsylvania, have invented certain new and usefulImprovements in Furnaces, of which the following isa specification,reference being had therein to the accompanying drawing.

My invention relates to improvements in a combined hot air and hot waterfurnace.

The object of my invention is to rovide a furnace of this characterwhich is adapted to be used as a combined hot air and hot water heatingfurnace, and in which the air and water are more thoroughly heated thanin furnaces of this character.

Another object of my invention is to provide a simple, cheap andeffective furnace, as

will be hereinafter more fully described and shown in the drawings.

In the accompanying drawings, Figure 1, is a perspective'view of myimproved furnace 'showing the casing broken away, and showing in dottedlines the smoke flues in the inner casing. Fig. 2, is a verticallongitudinal sectional view showing one of the side plates removed, andshowing the interior of the fire pot. Fig. 3,'is .a verticallongitudinal the center of the furnace. Fig. 4, is a transverse verticalsectional view taken on the line /y--y of Fig. 3. Fig. 5, is atransverse vertical sectional view taken on the line of Fig. 3.

Referring now to the drawings, 1 represents my improved furnace which,as shown, is made of a rectangular form' although the same could bemade. of any desired form. The said furnace consists of a base 2 upon 4owhich is mounted the outside casing 3, and

which has an inside casing`4 therein, which, as is well understood, issmaller than the outside, casing, leaving the hot air space 5 betweensaid casings, and entirely surrounding the inside casing. The said hotair space is provided with a cold air supply of anycharacter, and bymeans of whic cold air is fed from the outside to the hot air space 5.In communication with said space 5 above the 5o inside casing is a pipeSleading to the room to be heated, and while I have shown but one ofthese hot air pipes it is understood that there is a separate pipe foreach room to be heated.

The inner casing 4, as shown, rests u'on the base within the outercasing,.and sai inner casing is formed of the end plates 9 and 10supporting the top plate 11. The said casing 1s closed by the enlargedside plates 12 ,and 13, which are firmly clamped together by the bolts15 passing transversely through the frame and provided on the outside oft e side plates 12 with nuts 16, whereby the sevl eral plates are firmlyclamped together to form the complete inner casing.

The plates forming the inner casing are either cast or stamped of sheetmetal, and the frame above the base is provided with a horizontal plate17 which is provided with a central opening 18 in which are mounted thegrate bars 19, and as shown, form the firepot 20 above and the ash pit20 below. The end plate 9 above the plate 17 is provided with an openingthe door casing 23 which extends out through the casing 3, and isprovided with a door and by means of which access is had to the lirepot. The plate 17 adjacent its rear end and eyond the grate, is providedwith a transverse vertically-extending plate 24 which forms the rearwall of the fire-pot.

The end plate 9 above the fire-pot is provided with the twoinwardly-extendin horizontal plates 26 and 27 which are of a ength toextend nearly across the entire frame, and

connected together at their rear end by a vertically-disposed plate28which is in a -vertical alinement with the plate 24. The said plate 28extends downward below `the lower plate 27, and 28, and leaves a space29 at the rear above the fire-box through which the gases and smoke passto the vertically-arranged flue 30.

The plates 26 and 27, as shown, are of a width to extend across thestove and form a tight joint with the side plates 12 and 13, and thusform an air space 31 within the inner casing intermediate its top andbottom. The said space adjacent its rear end, is provided with a tank 32which is of a width slightly less than that of the plates. The said tankis water-tight and adapted tohold water, as will be hereinafter morefully described. The said plates 12 and 13 opposite the air-space 31 areprovided with the elongated openings 33 and 34, oppositely arranged. Theopenings 33 and 34 are adjacent thejforward endoffgtheairjspacegandjjestablishilaj'communca- IOO tion directly throughthe casing for 'allowing air within the hot-air space to passtherethrough and to become heated more thoroughly. The openings 33 and34are arshown, 1s 1n communication with the vertical gas or smoke iiue 30at one side through an opening A which is at one side of the space.Theend plate 10 of the inner casing has an opening 38 communicating withthe space 37 on the opposite side from the opening A. The stove pipe 39is in communication with an opening 1n the casing and extends outwardlythrough the outer casing 3 to the chimney. The said opening A, as shown,is at one side of the space 37 and the smoke pipe at the opposite side,and extending from the rear wall 10 forwardly between the two openingsis a vertical division plate B which extends from the upper end of theouter casing to the partition or plate 27, and by means of which thespace between the same is divided into two horizontal passages 37 and40.The said plate B has its forward end cut away, as indicated at 41, whichforms a communication between the passages 37 and 40, as will behereinafter more fully described. The gases, smoke, etc, pass upwardlythrough the passage 30 through the opening A, and into the passage 37,and travel forward across the upper face of the tank, and hot airpassages and through the opening or cut-away portion 41, and travelrearwardly through the passage 40 and out the stovepipe, thus increasingthe len th of passage of the smoke and gases, where y the upper, rearand lower faces of the hot air space and tank are directly affected bythe heat of the products of combustion. l

The end plate 9 opposite the upper space 40 is provided with an opening42 having a door 43 and forming the damper to regulate the draft to thefire. It will be seen that when the door is opened the air passes fromthe outside to the space 37 and out through the flue 40 yand decreasesthe draft in the flue 37, and thus 4regulates the burning of the fire.

The ash-space 21 is provided with an outwardly-extending door housing 44which ex tends outward through the outer casing and is provided with adoor 45 by means of which the draft to the furnace is regulated by meansof the damper 46. By means of this it is also understood that the ashesare removed from the furnace. The door 23 is also provided with a damper47.

When it is not desired to use the hot water heating system, the pipes 35and 36 are removed and the air passes through the tank,

the same as through the space in front of the same, and thus adds anadditional heating surface for the air.

From the foregoing description, it will be seen that the air within thespace 5 is more thoroughly heated, as the air has a larger heatingsurface, owing to the passages through the inner casing.

' Having thus described my invention, what I claim and desire to secureby Letters Patent, is z* 1. A furnace of the character described,comprising an inner and outer casing` forming a hot air s ace betweenthe same, a grate within the lbwer end of the inner casing, a horizontalair passage intermediate the grate and the upper end of the casing, andof a size to leave a vertical smoke flue at the rear of' the casing, thesaid inner casing having openings opposite the horizontal passage andforming communication between the same and the hot air space, a tankwithin said passage, pipes connected to the tank and passing through theopenings in the inner casing, and through the outer casing, and adaptedto be used for hot water heating purposes, and divisional plates carriedby the upper face of' the horizontal air passages to cause the productsof combustion to travel twice across the same before entering the smokepipe.

2. A furnace 0f the character described, comprising an inner and outercasing forming a hot air space between the same, a grate within thelower end of the inner casing, a horizontal air passage dividing theinner casing intermediate the grate and the upper end, and cut away atone side at the rear to form a smoke flue, the inner casing havingoppositely arranged openings opposite the air pas sage, and forming acommunication between the same and the hot air space, a verticallyarranged plate extending from the rear wall of the casing at the inneredge of the smoke flue, and extending partially over the air passage anddividing the space above the air passage into two horizontal passages,substantially as shown. 1

3. A furnace of the character described, comprising an inner and outercasing forming a hot air space between the same, a grate within thelower end of the inner casing, a horizontal air passage dividing theinner casing intermediate the grate and the upper end. and cut away atone side to form a vertical smoke flue, a tank within said air passage,pipes connected to the tank and passing through the openings and throughthe outer casing, and adapted to be used for hot water heating purposes,a vertically-arranged. divisional plate extending from the rear wall ofthe casing on the inside of the smoke flue and extending forwarddividing the space between the upper face of the air passage and the topof the inner easing into two'hor'izontal passages communicating witheach other lOO IIO

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at their forward end, and the rear end of one passage in communicationwith the vertical smoke flue and the rear end of the other passage incommunication with the smoke pipe.

4. A furnace of the character described, comprising an inner andoutercasing forming a hot air space between the same, a grate in thelowerend of the inner casing, an air passage above the grate anddividing the inner casing into an upper and lower horizontalcompartment, connected at the rear and one side by a vertical smokeflue, a tank within said air passage and adapted to be used for hotwater heating purposes, and means carried by the upper face of the airpassage for causing the products of combustion to travel twice back andforth Within the upper compartment before they pass therefrom.

5. A furnace of the character described, comprising an inner and outercasing forming a hot air space between the same, a grate in the lowerend of the inner casing, an air passage above the grate and dividing theinner casing into an upper and lower horizontal compartment, said airpassage being in communication with the hot air space at its sides, avertical flue at the rear end of the lower compartment and the airpassage, and being in communication with the upper compartment throughan opening adjacent one side wall of the inner casing, a verticaldivisional plate extending from the rear wall of the inner casingbetween the upper face of the air assage and the top of the innercasing, and orming a forwardlyeXtending passage in communication withthe smoke flue, the forward yend of said plate cut away to formacommunication with the passage on the opposite side of the divisionalplate, a smoke pipe in communication with the last named passage, and adoor communicating with the forward end of the' upper compartment forregulating the draft through the same to the smoke pipe. i

In testimony whereof I affix my signature in presence of two witnesses.

JAMES M. HEVERLY. Witnesses z H. A. HEVERLY, C. E. BROWN.

